Hadrons and leptons

Hadrons and leptons Quiz

Spec 3.2.1.5 · AQA A-Level Physics: Quiz

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5 questions, one answer each

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1. Which particle is a meson?
- A. Proton
- B. Neutron
- C. Kaon
- D. Muon
2. What is the baryon number of a pion?
- A. 0
- B. +1
- C. −1
- D. +2
3. In the decay μ⁻ → e⁻ + X + $\nu_\mu$ , what is X?
- A. $\nu_e$
- B. $\bar{\nu}_\mu$
- C. e⁺
- D. $\bar{\nu}_e$
4. Why is the proton stable?
- A. It is the lightest baryon, so it cannot decay without breaking baryon number conservation
- B. It has no charge
- C. It is a lepton
- D. It is not affected by the weak interaction
5. Which statement about leptons is correct?
- A. They are subject to the strong interaction
- B. They include the pion
- C. They are not subject to the strong interaction
- D. They have baryon number +1